A workaround for future reference, or to make FWD15 work, is to change store to UK. Next to the login/register link there is a flag (I assume Austrian in your case). Click the arrow to its right and 'change store'. If you select UK the UK discount codes should work.

I finally managed to read the book and I really, really enjoyed it tremendously.

Roy told a wonderful story and so many things his character Chris experienced through his early years of life happened to me in the same way...

When Chris taped single episodes of "The Avengers" with his tape recorder in the days when a VCR still was luxury and listened to them again and again.
Finding out by accident that there were more episodes with different actors preceding the episodes you were just exploring...
The dawn of videocassettes and purchasing the box-sets... and buying all episodes again when the DVD took over... and finally for a third time because of the release on BluRay...
All the books and Websites...

So many times I thought Rory wrote about me being Chris...
Very well written.

I can recommend this book to all Avengerphiles... it brings back wonderful childhood/teenage-memories!